Contents

Product Description

This is the Scorpion Fishing Reel made by Johnson.

Replacement fishing reel for loosening/tightening fishing line. This is accomplished by human power as a crank (gear) which through a series of conversions spins and translates the reel to allow fishing line to be released or tightened.

Johnson has a wide variety of fishing reels, this being one of the lower price/quality ($7).

User Requirements

1. Durability and reliability - people who purchase this product do not want the product to be unable to perform its intended purpose or to altogether fail.

2. Aesthetics – purchasers are going to be more likely to buy the product if it is more attractive.

3. Ease of use – the reel needs to be simple and easy to use, shouldn’t require large amounts of time to assemble to the rod or to change lines.

4. The new reel must be able to fit on the most fishing pools

Engineering Specifications

1. Must have reel large enough to fit fishing lines. (in)

2. Steps to assemble to rod first time. (# of steps)

3. Time to assemble to rod first time. (s)

4. Fatigue life (# cycles until failure)

5. Color availability (# of colors)

6. Steps to change line. (# of steps)

7. Time to change line. (s)

8. Ability to fit rods. (in)

Parts

The table belows lists the Bill of Materials for the Scorpion Fishing Reel:

Table 1: Scorpion Fishing Reel Bill of Materials

Part #

Part Name

# Category

Function

Material

Picture

1

Pick up or Bail

Support Element

Locking Mechanism for Line (if over line, line is locked into place, if behind, in position for casting)

Metal

2

Spindle

Output

Holds wound line, or when turning reel handle, will spin to retract line.

Plastic

3

Drag Adjustment Knobs

Support Element

Adjusts tightness of the line. Allows line to “play out” when line is pulled.

Plastic (Exterior)

Metal (Interior)

4

Bail Spring

Support Elements

Applies force against the Bail when engaged.

Metal/Plastic

5

Bail Lever

Motion Conversion Element

Unlocks spindle from gearbox.

Metal

6

Plastic Casings

Structural

To add a shine to the appearance of the reel.

Plastic

7

Spindle Housing

Structural/ Motion Conversion Element

Protects drive shaft and spins the bail.

Plastic

8

Power wheel/gear

Transmission

Transfers power from handle to drive shaft and scotch yoke.

Metal

9

Handle

Input

Applies external force to power wheel.

Plastic

10

Yoke Shaft

Support Element

Moves spindle up and down.

Metal

11

Clutch

Transmission

Stops spindle from rotating in on direction when engaged.

Metal

12

Drive Shaft

Motion Conversion/Support Element

Transfers energy from power wheel to spin spindle.

Metal

13

Scotch Yoke

Transmission

Converts angular energy from power wheel to move the spindle linearly.